sometimes things change very fast

During my last days in Switzerland I had the idea to create some small dioramas by using Espresso-Cups.
These are big enough to give one tank space so that I could present the tank and a very little bit surrounding.
I made some tests and yes it was working. So I thought I could start with this, once I arrive in the USA.
Very fast I had to mention, that Espresso comes here in much bigger cups and that I'm not able to find my small ones.
So I have to change everything what I prepared in switzerland and have to build up with the bigger cups.